Simplify by Using Formula : (1 + A) (1 - A) (1 + A2) - Mathematics

Simplify by using formula :
(1 + a) (1 - a) (1 + a²)

Sum

(1 + a) (1 - a) (1 + a²)
= [(1)² - (a)²] (1 + a²)
= (1 - a²) (1 + a²)
(Using identify : (a + b)(a - b) = a² - b²)
= (1)² - (a2)²
= 1 - a⁴.

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Chapter 4: Expansions - Exercise 4.1

Chapter 4 Expansions
Exercise 4.1 | Q 4.5

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